I asked Square Enix about the PC version of FF16 since it's not mentioned in the official trailer or press release.
— Gematsu (@gematsucom) September 16, 2020
Response:
"We have no further information on if FF16 will be released on platforms other than the PS5."
Left: Trailer from stream.
Right: Uploaded trailer. pic.twitter.com/xvmDE5ror1